CentOS is one of the preferred Operating Systems for hosting servers. It is one of the countless Linux distributions out there, but what distinguishes it from all of the others is its long-term support, which guarantees that you will always have a stable and safe Operating System. Every CentOS version that is released is supported for 10 years, which is much longer than with almost every other OS out there. CentOS also has a much larger developer community than other distributions, therefore in case you encounter any problem or have any questions, you'll be able to instantly find the info which you need. CentOS is considered to be among the best server Operating Systems, due to the fact that it's very stable and secure, that makes it very reliable even when you host private information. Due to the fact that it is open-source, you can modify every part of it and customize it according to your requirements, not to mention that the overall cost for a CentOS-based server will be lower, because you will not have to pay license fees of any type.